The IRS has announced the Modernized e-File (MeF) system will be shutdown for annual maintenance in preparation of Tax Year 2023. This shutdown will only impact Individual Federal and State filings, while California will remain open as they are independent of the IRS system. ProSeries will remain open for California 1040 e-file through the end of the calendar year. This shutdown period will begin Saturday, November 18, 2023, at 11:59 PM Eastern time. ProSeries will shutdown 4 hours earlier to ensure that all returns in our system have time to process before the shutdown. ProSeries will begin blocking returns Saturday, November 18, 2023, at 7:59 PM Eastern.